Process for preparing diesters of naphthalenedicarboxylic acids

Details Process for preparing diesters of naphthalenedicarboxylic acids Process for preparing diesters of naphthalenedicarboxylic acids

C - Chemistry, Metallurgy

07

C

C07C 69/76 (2006.01) C07C 67/08 (2006.01)

Patent

CA 2117418

A continuous process for preparing a dialkylester of a naphthalenedicarboxylic acid composing passing a liquid phase reaction mixture composing a low molecular weight alcohol, a naphthalenedicarboxylic acid and a dialkylester of a naphthalenedicarboxylic acid at an elevated temperature through series arranged reaction zones (70, 71, 72, 73) while introducing a naphthalenedicarboxylic acid and a low molecular weight alcohol to an upstream reaction zone, agitating at least one reaction zone and removing a liquid product mixture comprising the dialkylester of the naphthalenedicarboxylic acid produced by the reaction of the naphthalenedicarboxylic acid with the low molecular weight alcohol from a downstream reaction zone.

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